Price & Stock Monitor for Any Online Shop

A price change monitor for any online shop, Shopify price monitoring included. Paste product URLs and get price and stock — no per-site scraper, no selectors to maintain.

Most shops publish their product data for Google in the page itself. This Actor reads that first (instant, cheap), falls back to the shop platform's own product API, and only opens a browser when a shop insists on drawing the price with JavaScript.

How to use

1. Sign up for Apify — the free plan's monthly credit is enough to try this Actor.
2. Open Price Monitor, fill in the input (the form is pre-filled with a working example) and click Start.
3. Watch results stream into the dataset table while the run is going.
4. Export as JSON, CSV, Excel, XML, HTML or RSS — or pull the results from your own code with the Apify API.

How this prices and stock monitor reads a page

1. schema.org JSON-LD — what shops publish for Google Shopping
2. Open Graph / microdata — product:price:amount and friends
3. Shopify / WooCommerce product API — exact price, stock and variants
4. Rendered page — last resort, for JavaScript-only storefronts

The result tells you which path was used, in priceSource.

Monitoring is the point

Turn on onlyChanged and the Actor remembers each product. The next run returns only what moved, with previousPrice, priceChange and priceChangePercent. onlyPriceDrops narrows it to drops.

Run it daily against your competitors' products and you pay for the handful that changed, not the whole list.

How to monitor prices and stock

Field	What it does
productUrls	Product pages from any shop
onlyChanged / onlyPriceDrops	Monitoring modes
onlyInStock, maxPrice	Filters
renderJavaScript	Browser fallback (on by default)

Input reference

Every option at a glance. A minimal input that works as-is:

{
  "productUrls": [
    "https://www.amazon.com/dp/B0D1XD1ZV3",
    "https://allbirds.com/products/mens-wool-runners"
  ],
  "renderJavaScript": true,
  "maxResults": 1000
}

All fields:

• productUrls (Product URLs) — Product pages from any online shop. No per-shop setup — the Actor reads the structured data shops publish for Google.
• renderJavaScript (Render JavaScript when needed) — Most shops publish their price in the page source and are read instantly. When one does not, the Actor opens it in a browser instead. Turn this off to stay HTTP-only. Default true.
• onlyChanged (Only when something changed) — Monitoring mode. Returns a row only when the price or stock differs from the previous run, with the old value attached. Default false.
• onlyPriceDrops (Only price drops) — Like the above, but only when the price went down. Default false.
• onlyInStock (Only in stock) — Skip products that are sold out. Default false.
• maxPrice (Max price) — Skip anything above this price.
• maxResults (Max results) — Total limit. Default 1000.
• proxy (Proxy) — Apify Proxy is used as a fallback when a shop blocks a direct request.

What the price output looks like

{
  "url": "https://allbirds.com/products/womens-dasher-nz-blizzard-deep-navy",
  "parsed": true,
  "shop": "allbirds.com",
  "title": "Women's Dasher NZ",
  "price": 140,
  "currency": "USD",
  "inStock": true,
  "brand": "Allbirds",
  "sku": "WOMENS_DASHER_NZ",
  "gtin": null,
  "rating": null,
  "reviewCount": null,
  "seller": null,
  "imageUrl": "https://www.allbirds.com/cdn/shop/files/A12464_26Q1_Dasher-NZ-Blizzard-Deep-Navy-Blizzard_PDP_LEFT_e38509e9-51da-49a3-a794-53de6797a109.png?v=1768948779&width=100",
  "priceSource": "json-ld",
  "availabilityRaw": "https://schema.org/InStock",
  "changeType": "new",
  "checkedAt": "2026-09-21T11:05:14.671Z"
}

Limits you should know about

• Give it product pages, not category pages — a listing page has no single price.
• Pages where no price can be found are reported and not charged.
• Some large retailers block automated visits entirely; those are reported too.

Pricing — what you pay per product

This Actor uses pay-per-event pricing: no monthly rental, you pay for the results you get. Prices per 1,000 results by Apify plan:

Event	Free plan	Bronze	Silver	Gold+
product — One product checked for price and stock	$2.00	$1.80	$1.70	$1.60

There is also a small start fee of $0.00005 per GB of memory ($0.00005 per run at the default 1 GB). Platform compute is included in the price — you are not billed separately for run time. Set a maximum total charge on the run if you want a hard cap, and use the input limits to control how much is fetched. The current prices are always on the Pricing tab.

Tips

• Start with a small maxResults (say 20) to check the output, then raise it — you only pay per result.
• For ongoing tracking, schedule the Actor and turn on onlyChanged so each run returns only what is new.
• Keep the default proxy setting — it is only used as a fallback when a direct request is blocked.
• Rows the Actor cannot read are logged and skipped, never charged — check the run log if a count looks low.

Automate & schedule

Run this Actor on autopilot and pull results into your own stack:

• Apify API — start runs, fetch datasets and manage schedules over REST.
• apify-client for JavaScript and apify-client for Python — official SDKs.
• Schedules — run it on a cron to keep your data fresh.
• Webhooks — trigger downstream actions the moment a run finishes.

JavaScript

import { ApifyClient } from 'apify-client';

const client = new ApifyClient({ token: 'MY_APIFY_TOKEN' });
const run = await client.actor('tindacloud/price-stock-monitor').call({
    "productUrls": [
        "https://www.amazon.com/dp/B0D1XD1ZV3",
        "https://allbirds.com/products/mens-wool-runners"
    ],
    "renderJavaScript": true,
    "maxResults": 1000
});

const { items } = await client.dataset(run.defaultDatasetId).listItems();
console.log(`Got ${items.length} records`);

Python

from apify_client import ApifyClient

client = ApifyClient("MY_APIFY_TOKEN")
run = client.actor("tindacloud/price-stock-monitor").call(run_input={
    "productUrls": [
        "https://www.amazon.com/dp/B0D1XD1ZV3",
        "https://allbirds.com/products/mens-wool-runners"
    ],
    "renderJavaScript": True,
    "maxResults": 1000
})

for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

cURL — run and get the results in one request:

curl -X POST "https://api.apify.com/v2/acts/tindacloud~price-stock-monitor/run-sync-get-dataset-items?token=MY_APIFY_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"productUrls": ["https://www.amazon.com/dp/B0D1XD1ZV3", "https://allbirds.com/products/mens-wool-runners"], "renderJavaScript": true, "maxResults": 1000}'

Integrate with any app

Connect the dataset to thousands of apps — no code required:

• Make — multi-step automation scenarios.
• Zapier — push new records straight into your CRM or sheet.
• n8n — self-hosted workflows.
• Slack — get notified when a run finishes or finds something new.
• Google Drive / Sheets — auto-export every run to a spreadsheet.
• Airbyte — pipe results into your data warehouse.
• GitHub — trigger runs from commits or releases.
• Webhooks — call your own endpoint when a run succeeds or fails.

Use with AI assistants (MCP)

The output is clean, LLM-ready JSON. Call this Actor from Claude, ChatGPT, Cursor or any agent framework through the Apify MCP server — ask your assistant to "check these 30 product pages every morning and tell me which ones dropped in price or went out of stock" and let it run this Actor for you.

Agent-ready: autonomous payments (x402 & Skyfire)

This Actor is agent-ready — AI agents can discover it, run it and pay for it on their own. It uses pay-per-event pricing and limited permissions, so it qualifies for Apify's agentic payments:

• x402 — an open, HTTP-native payment protocol. Agents pay in USDC through the Apify MCP server — no Apify account needed.
• Skyfire — agent-to-service payments with pre-funded Skyfire tokens.

Building an AI agent, MCP tool or data pipeline? This Actor is ready to plug in and pay as it goes.

Ready-made examples

Open one, change the fields, press Start — nothing to configure:

• Price change monitor for any shop
• Get alerted when a product is back in stock
• Shopify price monitor
• Watch for price drops on a wishlist

Frequently asked questions

Do I need an API key or a login?

No. Paste your input, press Start. There is nothing to connect and no account on the target site to create.

How do I export the results?

Every run produces a dataset you can download as JSON, CSV, Excel, XML or HTML, or read through the Apify API from your own code. You can also connect it to Make, Zapier or n8n.

Can I run this on a schedule?

Yes. Apify schedules run it every hour, day or week without you being there. With the monitoring option on, a scheduled run returns only the products whose price or stock changed.

Can I call it from Python or JavaScript?

Yes — the Apify API runs any Actor and returns the dataset, and the official Python and JavaScript clients wrap it in a few lines. AI agents can call it too, through Apify's MCP server.

What does it cost?

You pay per result, not per hour. Filters are applied before anything is charged, so narrowing the input directly lowers the bill. Pages that cannot be read are reported in the log and never charged.

Is this data public?

Everything collected here is what any online shop shows to anyone without logging in. Check the target site's terms and the rules that apply to you before using the data commercially.

Related scrapers

• Shopify Store Products Scraper — a whole catalogue at once
• AliExpress Product Search Scraper — search with order counts
• Website Change Monitor — watch any page, not just products